static string RsaWithXml(RsaWithXmlKey rsa, string msg, string privateKeyPath)
{
//var encrypted = rsa.EncryptData(publicKeyPath, Encoding.UTF8.GetBytes(msg));
Console.WriteLine("Recieved message: {0}", msg);
try
{
using (var r = new RSACryptoServiceProvider(2048))
{
r.PersistKeyInCsp = false;
r.FromXmlString(File.ReadAllText(privateKeyPath));
RSAParameters parameters = r.ExportParameters(true);
var decrypted = rsa.DecryptData(privateKeyPath, Convert.FromBase64String(msg));
Console.WriteLine();
Console.WriteLine("D - {0}", Convert.ToBase64String(parameters.D));
Console.WriteLine("DP - {0}", Convert.ToBase64String(parameters.DP));
Console.WriteLine("DQ - {0}", Convert.ToBase64String(parameters.DQ));
Console.WriteLine("Inverse Q - {0}", Convert.ToBase64String(parameters.InverseQ));
Console.WriteLine("P - {0}", Convert.ToBase64String(parameters.P));
Console.WriteLine("Q - {0}", Convert.ToBase64String(parameters.Q));
Console.WriteLine(" Decrypted Text = " + Encoding.Default.GetString(decrypted));
Console.WriteLine();
return(Encoding.Default.GetString(decrypted));
}
}
catch (Exception e)
{
Console.WriteLine("Error happened: {0}", e.Message);
return("Error");
}
}
static void Main(string[] args)
{
var rsa = new RsaWithXmlKey();
const string publicKeyPath = "c:\\temp\\publickey.xml";
const string privateKeyPath = "c:\\temp\\privatekey.xml";
rsa.AssignNewKey(publicKeyPath, privateKeyPath);
TcpListener server = null;
try
{
// Set the TcpListener on port 13000.
Int32 port = 13000;
IPAddress localAddr = IPAddress.Parse("127.0.0.1");
// TcpListener server = new TcpListener(port);
server = new TcpListener(localAddr, port);
// Start listening for client requests.
server.Start();
// Buffer for reading data
byte[] bytes = new byte[256];
string data = null;
// Enter the listening loop.
while (true)
{
Console.Write("Waiting for a connection... ");
// Perform a blocking call to accept requests.
// You could also use server.AcceptSocket() here.
TcpClient client = server.AcceptTcpClient();
Console.WriteLine("Connected!");
data = null;
// Get a stream object for reading and writing
NetworkStream stream = client.GetStream();
int i;
// Loop to receive all the data sent by the client.
while ((i = stream.Read(bytes, 0, bytes.Length)) != 0)
{
// Translate data bytes to a ASCII string.
data = Convert.ToBase64String(bytes, 0, i);
//Console.WriteLine(data);
data = RsaWithXml(rsa, data, privateKeyPath);
}
// Shutdown and end connection
client.Close();
}
}
catch (SocketException e)
{
Console.WriteLine("SocketException: {0}", e);
}
finally
{
// Stop listening for new clients.
server.Stop();
}
Console.WriteLine("\nHit enter to continue...");
Console.Read();
}